title: Turbulent boundary-layer control with plasma actuators.
abstract: This paper reviews turbulent boundary-layer control strategies for skin-friction reduction of aerodynamic bodies. The focus is placed on the drag-reduction mechanisms by two flow control techniques-spanwise oscillation and spanwise travelling wave, which were demonstrated to give up to 45 per cent skin-friction reductions. We show that these techniques can be implemented by dielectric-barrier discharge plasma actuators, which are electric devices that do not require any moving parts or complicated ducting. The experimental results show different modifications to the near-wall structures depending on the control technique.
authors.affiliation: Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK. kwing-so.choi@nottingham.ac.uk
authors.forename: Kwing-So
authors.initials: KS
authors.lastname: Choi
authors.forename: Timothy
authors.initials: T
authors.lastname: Jukes
authors.forename: Richard
authors.initials: R
authors.lastname: Whalley